1976 Formula Transmission

[LB270]

Hi Guys,

My transmission is noisy, bearings I’m guessing. It is the original trans, it shifts fine and doesn’t slip. I am looking to get it rebuilt and need to know what transmission is in it. I assumed it was a Muncie but saw that GM stopped putting Muncies in cars in 1974. Any ideas? Borg & Warner maybe?

 

Thanks guys, I appreciate any feedback. 

[JUSTA6]

Saginaw ....If its a manuel trans.

[Frosty]

Is this an automatic or manual transmission?

If it is a manual, how many speeds? A 3-speed or a 4-speed?

Edited May 25, 2022 by Frosty

[LB270]

It’s a 4 speed manual. 

[Frosty]

I suspect you have a Saginaw M26/M27 4-speed since the Muncie M22 was discontinued by 1974. Pontiac used the Borg-Warner T-10 only behind the 455 starting in 1976. So here is a visual differences between a Muncie, Saginaw, and Borg-Warner cases.

[LB270]

Thank you Frosty! I appreciate the info. 

[Frosty]

Happy to help. Let us know what you have.

[LB270]

Turns out it was the reverse gear and not counter shaft bearings making the noise. Complete rebuild anyways. It was a Borg Warner Super T-10 and not a Saginaw. The serial number is stamped on the casing so this was the factory transmission. I appreciate the info and will keep updating as the saga continues, turns out parts may be a bit of a time issue. 
 

thanks fellas!  

[Frosty]

Happy to help. Definitely want to know how things go.

[LB270]

Hi Guys,

I ordered on a Super T-10 from Summit. I waited a month, check compatibility on their site. It arrived Monday, I booked today off to install it and the ORM Hurst shifter won’t bolt onto the tailhousing.  The bolt pattern is off and the top bolt is significantly too large. I called Richmond and they have never had a different pattern going all the way back to 1988. I called Hurst (Holley)to see if there is a bracket and they don’t have one but are willing to sell me a new shifter and accessory package. I’m a little frustrated that nobody has any questions in the compatibility sections about shifters. 
 

Any ideas fellas? Tips? I am rapidly running out of nice weather!!  
 

Thanks guys… 

[LB270]

Figured it out, I needed the bracket that I left on the old transmission. The install went smoothly once I had all the parts. New issue, the reverse plunger on the shifter does not plunge….I had tried to clean it up while it was out of the car and may have just bunged it up. If it’s not one thing it’s another.

Have a great day guys  

[JUSTA6]

It's always something, but when you get it right......